Secret Jardin Dark Room 240 Wide v4.0 Grow Tent, 8' x 4' x 6 2/3' cube It will not cause biofilm

It will not cause biofilm formation in hydroponic applications and is scalable to any system by adding 1-3mL/gallon of water into reservoir or fertilizer solution

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and 42' widths

25 to 11mL per gal

Duct Size 8″

Secret Jardin Dark Room 240 Wide v4.0 Grow Tent, 8' x 4' x 6 2/3' cube It will not cause biofilmSecret Jardin Dark Room 240 Wide v4. 0 Grow Tent, 8' x 4' x 6 2 3' Create the perfect indoor garden environment with the Secret Jardin Dark Room 3. 0 DR240W grow tent. This improved model offers superior durability, light proofing, and convenience for serious growers. Measuring 94. 5" x 47. 25" x 78. 75" (approximately 8' x 4' x 6. 5'), the DR240W provides ample space for your plants to thrive. Key Improvements: Stronger & More Durable: Upgraded 210D